They are thick gloves so you lose a lot of feeling when wearing them which would be fine if they kept your hands warm, but even with heated grips and an extra pair of thermal liners you get numb fingers after a few minutes of riding in sub 7 degree C weather.
The manufacturer states that these are waterproof, in actuality they are more like sponges. It may take a while for the water to get to your hands because of the thickness of the glove but when it gets there it stays there. I regularly have to attempt to dry them out at work and end up having damp hands on the ride home as 8+ hours on a heater doesn't dry them out.
On the plus side they are cheap... personally I wouldn't waste your money though.